Global Warming

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Transcript of Global Warming

Global Warming By: Ashley , Josiah & SherryWhat is Global WarmingGlobal Warming is a gradual increase in the overall temperature of the earth's atmosphere. This is generally attributed to the greenhouse effect, and is caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.What causes Global Warmingclimate change is primarily caused by the growing amount of heat-trapping gases in the atmosphere, often referred to as “greenhouse gases." ( carbon dioxide, methane etc. ) This is a result from human activities, such as deforestation, pollution, and burning fossil fuels.Who / what does it affect?There are:Health ImpactsEconomic Impacts Forest Impacts Water Impacts Species and Ecosystems Impacts Future of Global WarmingGreenhouse gas concentrations in the atmosphere will continue to increase unless the billions of tons of our annual emissions decrease. Increased concentrations are expected to:

•Increase Earth's average temperature •Influence the patterns and amounts of precipitation •Reduce ice and snow cover, as well as permafrost•Raise sea level •Increase the acidity of the oceans

These changes will impact our food supply, water resources, infrastructure, ecosystems, and even our own health .

What can we do?1. Reduce, Reuse, Recycle2. Use Less Heat and Air Conditioning3. Change a Light Bulb4. Drive Less and Drive Smart5. Buy Energy-Efficient Products6. Use Less Hot Water7. Use the "Off" Switch8. Plant a Tree9. Encourage Others to Conserve10.Educate the publicIn general, global warming effects all aspects of life all around the worldHealth ImpactsDeadly heatClimate change will cause high-latitude regions, like Canada, to warm drastically. With tropical heat comes tropical illnesses, and large increases in heat-related deaths.

- A hotter world is a sicker worldRising average temperatures will likely extend the ranges of disease-carrying organisms like mosquitoes, rodents and bats

Air pollutionAccording to the Canadian Medical Association, air pollution prematurely kills about 21,000 Canadians a year. This will continue to rise with the increased effects of climate change

Forests in British Columbia have been devastated recently by the mountain pine beetle, which thrives thanks to unusually mild winters. The value of these trees are billions of dollars

The mining industry in Canada is also vulnerable to climate change, including from reduced water levels.Forest ImpactsForest dispersion and shiftingdecreased soil moisture will cause more drought-resistant trees or grasslands to displace existing forest ecosystems.

Forest firesAs hotter, drier summers increase evaporation they will also increase the risk of forest fires across most of Canada, and increase the severity.

Forest disease and pest infestationsWarmer temperatures are also expected to expand the ranges and enhance the survival rates of forest pests such as the spruce budworm and the mountain pine beetleSummarizing video byNational Geographic